/**
 * Copyright (c) 2009 Jim Hurne
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 * 
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */
package org.tzconverter.tzgroup;

import java.util.List;

import org.tzconverter.tzdisplay.TimeZoneDisplayView;

/**
 * Model for the AddTimeZone component.
 * 
 * @since May 12, 2009
 */

public interface TimeZoneGroupModel
{
  public TimeZoneDisplayView createTimeZoneDisplay(String timeZoneId);
  public void removeTimeZoneDisplay(TimeZoneDisplayView remove);
  
  public boolean isValidTimeZoneId(String timeZoneId);
  
  public List<String> getSavedTimeZoneIds(); 
  
  public List<String> getCurrentTimeZoneIds();
  
  /**
   * Saves (persists) the currently added time zone ids to the
   * application preferences.
   */
  public void saveCurrentTimeZoneIds();
}
